MAPT and neuroblastoma: miR-34a was showed to repress the expression of endogenous tau protein in human neuroblastoma cell line M17D cells. Conversely, inhibition of endogenously expressed miR-34 family members leaded to increased endogenous tau expression. hsa-miR-34a-5p was identified as suggestively up-regulated (p = 1.89 × 10–7) in Takousis et al. (2019) meta-analysis.